I gave it a whirl with vinegar water and since the foam is so soft I took a chisel blade putty knife and my finger and pressed down on the foam. I placed the water on the putty knife and then placed that under the edge of the structure.
The foam pulled away after being soaked.
Got them both off the base.
The only 2 casualties were the stairs
And the awning posts
Thanks guys any suggestions on laying these out are appreciated.